<div *ngIf="lastMessage" 
class="bg-info p-a-1 text-xs-center" 
[class.bg-danger]="lastMessage.error">
   <h4>{{lastMessage.text}}</h4> 
</div>
<div class="text-xs-center m-b-1">
<button *ngFor="let resp of lastMessage?.responses; let i = index" 
       (click)="resp[1](resp[0])"
       class="btn btn-primary m-a-1" [class.btn-secondary]="i > 0">
   {{resp[0]}}
</button>
</div>
